An arrangement structure of a wiring member includes: a wiring member including a plurality of wire-like transmission members parallelly arranged and a base keeping the plurality of wire-like transmission members in a state of being arranged side by side; and an arrangement target of the wiring member, wherein a slit extending along a longitudinal direction of the plurality of wire-like transmission members is formed in a portion of the base between the plurality of wire-like transmission members.

A flexible flat cable (FFC) includes a first insulation layer, at least one pair of conductors, a plurality of low-k dielectric layers, two second insulation layers, and at least one shielding layer. The pair of conductors is located within the first insulation layer. Each pair of conductors includes a plurality of first conductors, and the first conductors are axially extending and arranged in parallel. The low-k dielectric layers are embedded in the first insulation layer. Each of the pair of conductors or each of the first conductors is covered and surrounded with one low-k dielectric layer. The two second insulation layers are located on two surfaces of the first insulation layer. The shielding layer is located on the two second insulation layers opposite to the first insulation layer.

A wiring member includes: at least one first cover wire; at least one second cover wire; and a first sheet to which at least the first cover wire is fixed, wherein a first hole is formed in the first sheet, and a connection part where a core wire of the first cover wire and a core wire of the second cover wire are connected is located in a region where the first hole is formed.

Embodiments of the present disclosure are directed to a flexible flat cable. Two insulating material layers are sandwiched with a plurality of conductors therebetween by two adhesive layers, and a metal shielding layer is attached to an outer side of the two insulating material layers by a laminated adhesive layer. The conductors are bare conductors, and the laminated adhesive layer is a laminated adhesive layer with bubbles. The flexible flat cable is small in size, which not only meets the requirements of characteristic impedance and insertion loss in industry, but also significantly reduces the cost compared with the conventional flexible flat cable made of traditional electronic round wires.

A shielded flat cable includes multiple conductors arrayed in parallel along a first plane, a resin insulating layer including first and second resin insulating layers that cover the conductors, the first plane being sandwiched between the first and second resin insulating layers, a shield layer that covers an outer surface of the resin insulating layer and that includes an adhesive, and a pair of flame-retardant resin films that cover an outer surface of the shield layer. The pair of resin films have a first bonding section and a second bonding section where the pair of resin films are bonded to each other. The outer surface of the shield layer has a first portion that contacts the first bonding section and a second portion that contacts the second bonding section. The shield layer has a third bonding section where the adhesive is bonded to each other.

A shielded electrical ribbon cable includes adjacent first and second longitudinal conductor sets where each conductor set includes two or more insulated conductors. The first conductor set also includes a ground conductor that generally lies in the plane of the insulated conductors of the first conductor set. At least 90% of the periphery of each conductor set is encompassed by a shielding film. First and second non-conductive polymeric films are disposed on opposite sides of the cable and form cover portions substantially surrounding each conductor set, and pinched portions on each side of each conductor set. When the cable is laid flat, the distance between the center of the ground conductor of the first conductor set and the center of the nearest insulated conductor of the second conductor set is σ1, the center-to-center spacing of the insulated conductors of the second conductor set is σ2, and σ1/σ2 is greater than 0.7.

A wiring member includes: a wire-like transmission member; a first sheet to which the wire-like transmission member is fixed; and a second sheet, at least a part of which is overlapped with the first sheet, wherein a first through hole is formed in one of the first sheet and the second sheet, a second through hole formed to be continuous with the first through hole and smaller than the first through hole is formed in another one of the first sheet and the second sheet.

A wiring member is a wiring member including: a wire-like transmission member; a first sheet to which the wire-like transmission member is fixed; and a second sheet, at least a part of which is overlapped with the first sheet, wherein the second sheet has higher rigidness than the first sheet, a holding hole is formed in the second sheet, and the second sheet is held on a fixing target member of a vehicle via a vehicle fixing component inserted into the holding hole.

A ribbon cable includes a plurality of cable groups arranged side by side with a gap between each pair of adjacent cable groups, a first covering film arranged on a first side of the cable groups, and a second covering film arranged on a second side of the cable groups opposite the first covering film. The first covering film has a first bonding portion and a first spacing portion. The second covering film has a second bonding portion and a second spacing portion. The first bonding portion and the second bonding portion are bonded to each of the cable groups. The first spacing portion and the second spacing portion are located at the gap and are separated from each other.

The application discloses a flat cable assembly, which includes a plurality of cables and an insulating film. The cables are arranged in a row and have a center line. The plurality of cables respectively have a first connecting portion and a second connecting portion symmetrically disposed with the first connecting portion, a signal wire and a grounding wire. The first connection portion is located on one side of the center line, and the second connection portion is located on the other side of the center line. The insulating film is provided on the first connection portion and the second connection portion of any one of the plurality cables. The two sides of the insulating film do not protrude outward from the two outermost cables, and the two surfaces of the insulating film in the direction perpendicular to the center line are planes.